A leaked V-Ray submission showed Intel’s Core Ultra 9 285K scoring 44,883, behind a reported 49,360 for AMD’s Ryzen 9 9950X—about a 9.1% gap, commonly rounded to 10%. The result was directionally credible, but it was one uncontrolled submission, not proof that the 9950X wins every creator workload. Later reviews found the 9950X ahead in Corona and some Blender and V-Ray tests, while the processors were roughly tied in at least one Blender Open Data comparison.
What the leaked benchmark actually showed
The figures were reported on September 23, 2024, as a leaked benchmark submission rather than an official Intel claim. In the cited V-Ray result, the Core Ultra 9 285K scored 44,883, compared with 49,360 for the Ryzen 9 9950X. The same report listed 35,558 for Intel’s Core i9-14900K, putting the 285K about 26% ahead of its predecessor in that submission. The original report did not establish the exact V-Ray version, scene, BIOS, memory settings, power limits, cooling or whether both systems were configured identically.
That distinction matters. A single result can reveal a plausible performance pattern, but it cannot establish repeatability across renderers or production scenes.
Why the comparison attracted attention
Arrow Lake changed Intel’s desktop design. The 285K combines eight Performance cores with 16 Efficient cores for 24 cores and 24 threads. Intel also removed Hyper-Threading from the Performance cores. The 9950X instead has 16 Zen 5 cores and 32 threads. Intel’s newer Lion Cove and Skymont cores can offset the thread-count difference in some software, but heavily parallel renderers may benefit from the 9950X’s larger logical-thread capacity and homogeneous core layout.
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- Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter, and quicker.
- Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included
- Performance Hybrid Architecture Integrates two core microarchitectures, prioritizing and distributing workloads to optimize performance
- Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
- Compatibility Compatible with Intel 800 series chipset-based motherboards
The relevant specifications are not interchangeable in a simple core-count contest:
| Specification | Core Ultra 9 285K | Ryzen 9 9950X |
|---|---|---|
| Architecture | Arrow Lake | Zen 5 |
| Cores / threads | 24 / 24 (8 P-cores + 16 E-cores) | 16 / 32 |
| Maximum boost | 5.7 GHz | 5.7 GHz |
| Processor power figures | 125W base power; 250W maximum turbo power | 170W TDP; 230W package power limit commonly listed in review comparisons |
| Launch pricing cited in 2024 coverage | $589–$599 | $599 MSRP |
Intel’s official specifications list the 285K’s core, thread, frequency and power ratings at Intel’s product page. Tom’s Hardware published the launch-price comparison in its 285K review. Vendor power labels measure different things, so they should not be treated as directly equivalent whole-system consumption.
What independent reviews found after launch
The 285K launched on October 24, 2024. Retail reviews gave a mixed result rather than a universal AMD victory.
Rank #2
- Next‑Gen Platform Support: Compatible with Intel 800 Series Chipset‑based motherboards with LGA1851 Socket enabling PCIe 5.0/4.0 and high‑speed DDR5 memory (up to 7200 MT/s).
- High‑Performance Core Configuration: Features up to 24 cores (8 P‑cores + 16 E‑cores) for demanding gaming and creator
- Ultra‑Fast Boost Clocks: Reaches up to 5.5 GHz max turbo frequency for top‑tier responsiveness and performance
- Built for Enthusiasts: Unlocked for performance tuning when paired with Intel Z‑series chipsets, making it ideal for overclockers and power users.
- Robust Power & Thermal Design: Engineered with 125W base power and 250W max turbo power to sustain high‑intensity
| Workload | Observed result | How to interpret it |
|---|---|---|
| Leaked V-Ray submission | 9950X ahead by about 10% | One reported submission; conditions were not fully documented |
| Blender Open Data | Approximately tied in TechSpot’s test | Version, scene and methodology matter |
| Corona 10 | 9950X about 9% faster in TechSpot’s testing | Independent result supporting a real 285K weakness in this renderer |
| Selected Blender and V-Ray-related tests | 9950X ahead in Notebookcheck coverage | Review-lab and test-suite differences apply |
| Leaked Cinebench multi-core figures | 285K 43,011; 9950X 40,997 | Additional leak, not a controlled review comparison |
TechSpot’s review found the 285K roughly 9% behind in Corona 10, yet matching the 9950X in its Blender Open Data result: TechSpot’s testing. Notebookcheck reported the 9950X ahead in selected Blender tests, including the Blender 2.79 BMW27 CPU scene, and in related rendering measurements: Notebookcheck’s review. The leaked Cinebench numbers came from the same original report, not from an independently controlled lab run.
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Why renderer rankings change
Thread scaling and SMT
Some CPU renderers scale close to linearly across available threads; others encounter synchronization, memory or scene-related limits. Removing Hyper-Threading can therefore hurt one application more than another. TechSpot’s 7-Zip decompression result, where the 285K was about 25% behind the 9950X, illustrates how workloads that exploit many logical threads can expose this design trade-off.
Mixed versus homogeneous cores
The 285K schedules work across fast P-cores and smaller E-cores. The 9950X presents 16 broadly similar Zen 5 cores. Operating-system scheduling, renderer thread placement and the application’s own worker model can all affect the outcome.
Rank #3
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- Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included
- Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
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- 16+1+2+1 80A DrMOS power stages with ProCool power connectors, 8-layer PCB, alloy chokes and durable capacitors for stable power delivery
Software, scene and instruction paths
Blender, V-Ray, Corona and Cinebench are different programs, and even different versions or scenes can change the ranking. Instruction-set optimizations may also vary by application. The leaked submission does not provide evidence that any single instruction set caused its result, so attributing the gap to AVX-512 or another feature would be speculation.
Memory, firmware, power and cooling
DDR5 speed and latency, memory rank, BIOS maturity, motherboard power behavior and sustained cooling affect long renders. A 285K run with unrestricted board settings is not necessarily comparable with one using Intel’s intended limits, and short benchmark loops may not reflect hours of production rendering.
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V-Ray and Corona CPU rendering
If most of your working time is spent on long CPU renders, the 9950X is the safer choice when your exact V-Ray or Corona version shows an AMD lead. The leaked V-Ray result and TechSpot’s Corona result both point in that direction, although neither establishes a universal margin for every scene.
Rank #4
- 24 cores (8 P-cores + 16 E-cores) and 24 threads. Integrated Intel Graphics included
- Performance hybrid architecture integrates two core microarchitectures, prioritizing and distributing workloads to optimize performance
- Up to 5.6 GHz. 40 MB Cache
- Compatible with Intel 800 series chipset-based motherboards
- Turbo Boost Max Technology 3.0, and PCIe 5.0 & 4.0 support. Intel Optane Memory support. No thermal solution included
Blender
Do not select between these CPUs from the V-Ray leak alone. Check your Blender version, Cycles or Eevee, CPU or GPU rendering mode, scene complexity and whether simulations, compositing or viewport work matter. The evidence ranges from a tie in TechSpot’s Blender Open Data test to an AMD lead in selected Notebookcheck scenes.
Video editing and encoding
Premiere Pro, DaVinci Resolve, HandBrake and After Effects can produce different rankings depending on codec, effects and hardware acceleration. TechSpot and PC Gamer reported mixed creator results, so test the applications and export formats you actually use rather than treating a CPU-render benchmark as a proxy for all media work. Sources: TechSpot and PC Gamer.
GPU-based rendering
For Blender Cycles, Redshift, Octane, V-Ray GPU and similar workloads, GPU model, VRAM, cooling and storage may matter more than a modest CPU difference. The CPU still affects scene preparation, simulation and other tasks, but the leaked V-Ray CPU score does not predict GPU-render performance.
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Best Value
- Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter, and quicker.
- Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included; Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
- MAG Z890 TOMAHAWK WIFI is designed for gamers with a stable, durable and DIY friendly foundation for their PC builds, supports Intel Core Ultra Processors (Series 2) advanced AI PC applications demand
- Supports Dual Channel DDR5 Memory, up to 256GB
- Extended Heatsink Design: extended PWM heatsink and enhanced circuit design ensures even high-end processors run in full speed
Platform and total-cost considerations
The 285K requires an LGA1851 motherboard, generally on the Z890 platform. The 9950X uses AMD’s AM5 platform, with chipset and BIOS support varying by board. Compare the complete build: motherboard features, validated DDR5 kits, cooler, power supply, expansion needs and upgrade plans. Launch prices of roughly $589–$599 for the 285K and $599 for the 9950X are historical 2024 MSRP signals, not verified September 2026 retail prices.
Intel platform information is available at Intel’s desktop processor page; AMD’s processor lineup is at AMD’s Ryzen desktop page. Both processors are performance-class chips intended for sustained workloads, so budget for a capable cooler and adequate case airflow. Use motherboard-qualified memory instead of assuming an extreme DDR5 kit will improve every renderer.
Which CPU should you buy?
Choose the Ryzen 9 9950X when
- CPU-based V-Ray, Corona or another well-threaded renderer dominates your workload.
- Independent tests of your exact software and scenes show an AMD advantage.
- You already own a suitable AM5 board or value the 9950X’s 16-core/32-thread design for compiling, simulation and other heavily parallel work.
Choose the Core Ultra 9 285K when
- Your applications are competitive on Arrow Lake or benefit from Intel-specific media support.
- Integrated graphics, platform connectivity or a lower complete-system price matters.
- Your own benchmarks show the 285K meeting performance targets and its power behavior suits your case, noise and cooling limits.
Verdict
The leak was not fake or meaningless: it correctly foreshadowed that the Core Ultra 9 285K can trail the Ryzen 9 9950X in some CPU-rendering workloads. It was misleading only when treated as a universal ranking. Reviews later found a clear 9950X advantage in Corona and selected tests, a roughly even Blender Open Data result, and a different picture in leaked Cinebench figures. For a purchase decision, benchmark the renderer, version and scenes you actually use, then compare the full LGA1851 or AM5 platform cost.
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